Date of Award

1-1-2001

Thesis Type

Masters

Document Type

Thesis

Divisions

Faculty of Languages and Linguistics

Department

-

Institution

Universiti Malaya

Abstract

The aim of the study was to determine if Transient Evoked Otoacoustic Emissions (TEOAEs) can be used as a method of Screening for hearing impairment and to study the effects of External and Middle ear conditions on the outcome of TEOAEs. TEOAE and Tympanometry tests were performed on 193 infants (386 ears). External and Middle ear abnormalities were evaluated by ear examinations and Tympanometry, and assigned to two groups based on the tympanogram results. Group A had normal external and middle ear with 'Type A' Tympanograms and group B with external and/ middle ear abnormalities and abnormal tympanograms other than 'Type A'. Infants who failed the TEOAE screening in group A had follow up with Auditory Brainstem Response test (ABR), while group B failures were seen by the Ear specialist. Post examination pass rate were evaluated by TEOAE and Tympanometry. The findings of this study are as follows: 255 (66 %) passed the initial TEOAE screening test while 131 (34 %) failed. Ears with no external or middle ear abnormalities (group A) had a significantly higher TEOAE screening pass rate (72.6%) than those in (group B) as detected by Tympanometry (31.2%). TEOAE failure rate in group A indicated a higher percentage of infants having Sensorineural hearing impairment than in group B. Post examination and treatment of external and /middle ear conditions improved the TEOAE pass rate.

Initial

snms

Additional Information

Dissertation (M.A) -- Faculty of Languages and Linguistics, Universiti Malaya, 2001.

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